Window-fastener.



PATENTED MAY '7, 19 07.

J. w. LYON. WINDOW FASTENER. AIIBPLIOA-TION FILED AUG.29. 1906.

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' plate or casing and the locking device.

' the same.

JAMES W. LYON, OF EVANSTON, ILLINOIS.

WlNDOW-FASTEN ER.

Specification of Letters Patent.

Patented May 7, 1907.

Application filed August 29, 1906. Serial No. 332,479.

To all whom it'may concern.-

Be it known that I, JAMES WV. LYON, a citizen of the United States,residing at Evanston, in the county of Cook and State of Illinois, haveinvented new and useful Improvements in WVindow-Fasteners, of which thefollowing is a specification.

This invention is a device for holding the lower sash of a window at anydesired point and also for securing and locking the two sashes togetherin any desired position.

The object of the invention is to form an improved device having adetent to lock the two sashes and another to engage the win dow casing,and means to release both simultaneously.

In the drawings, Figure 1 is a perspective view of the device. Fig. 2 isan elevation of Figs. 3 and 4 are sections at a right angle to eachother, showing the detents engaged. Fig. 5 is a plan of the base Fig. 6is a side view of the releasing cam lever.

Referring particularly to the drawings, -12 and 13 indicate the upperand lower sashes of a window, 14 is the side of the window casing; andlei the parting bead.

The fastener has a base plate 15 with a flange 15 at the inner edgewhich is let into the top rail of the lower sash. Integral with theplate is a'circular casing 16 having openings 16 and 16 in its wall, ata right an gle to each other and provided with ears 16 at the sides.Mounted in these openings are catches or detents 17 and 17 each havingan outer tapered arm 17 and an inner oblique projection 17 These catchesare mounted on pivot pins 18 between the ears 16, and swing to or fromengagement with the racks.

19 are springs which tend to keep the catches in their lower or engagedposition.

A cam device for operating the catches consists of a circular plate 2Oprovided with a handle 20 and a central sleeve 20 preferablyscrew-threaded and mounted on a screw stud 21, and with a segmentalcircumferential cam 22 and a segmental bearing flange 23.

24 is a notched or corrugated strip forming a rack on the side of thewindow frame, which rack is engaged by the catch 17 and the lower sashheld so that it cannot be raised. The catch 17 engages a corrugatedstrip or rack 24? on the stile of the upper sash.

The cam 22 engages and bears down on the rear end of the catches 17 and17 By turning the said cam plate the inner ends of the catches aredepressed and the outer ends raised or disengaged from the racks, or bya reverse movement the catches will be low ered by their springs andengaged with the racks.

To look the catch I provide a plate 25 pivoted on the stud 21. andhaving a finger'25 within the casing 16 and hand piece 25 projectingforwardly through a slot 16 in the casing. 25 will engage under the heelof the catch 17, as shown in Fig. 4, and prevent it being moved, thusalso locking both sashes together.

The pivot stud 21 instead of being screwthreaded may simply be a plainpin or stud provided with a cap or rivet to hold the cam piece, as thecam will work on the catches without the stud being screw-threaded.

The catch or detent 17 will prevent the lower sash being raised. Inorder to prevent the lower sash being lowered from a raised position, Iprovide a supplemental catch 30, at the side of the casing, pivoted atits upper end to a lug 31 and having a point 32 at its lower end whichwill engage in a rack 33 secured to the parting bead 14. This catch hasa laterally-projecting finger which extends in position to be struck bya lug 17 Y on the catch 17, when said catch is raised. The catch 30 isnormally held in engagement with its rack by a spring 34 behind thesame. When by movement of the cam plate the catch 17 is lifted anddisengaged, its lug 17 Y comes against the finger 30 and swings thecatch 30 back so that its point 32 is disengaged from the rack 33, andthus renders the sash free for either upward or downward movement.

It will be seen by the above description that the device provides meansfor locking the two sashes together and also for then fastening them inany desired position within 10:

the casing, and the catches are all manipulated by a single movement ofthe cam device.

I claim:

1. A sash fastener comprising a base plate having upwardly projectingears and a stud, a catch pivoted between the. ears and ar ranged toswing up and down and having its outer end projecting beyond the plateto engage an adjacent sash or casing, and a cam 110 By turning the saidplate the finger.

plate rotatable on the stud, the inner end of the catch projecting underthe cam which bears thereon.

2. A sash fastener comprising a base plate having an upwardly projectingstud, a cam rotatable on the stud and having its cam surface on itsunder side, a catch pivoted on the base plate and having an outerengaging end and an inner end projecting under the cam surface, and aturning plate on the stud under the cam, having a projection which maybe turned under the inner end of the catch, to lock it against movement.

3. A sash fastener comprising a base plate, a pair of pivoted catchesthereon extending at a right angle to each other in position to engageat their outer ends an adjacent sash and window casing respectively, anda cam pivoted on the base plate and under which the inner ends of thecatches extend.

4. A sash fastener comprising a base plate, a pivoted catch thereonarranged to swing up and down and having an outer end extending beyondthe edge of the plate in position to engage an adjacent casing andprevent movement in one direction, means to depress the inner end torelease the catch, and another catch pivotally mounted on the plate andextendingbeside the said catch at a difierent angle and adapted toengage the casing and prevent movement in the opposite direction andhaving a projection arranged to be struck by the said catch, 'tosimultaneously release both.

5. A sash fastener comprising a base plate having a circular casingthereon with a stud at the center, the casing having openings at a rightangle in its sides, a pivoted catch 111 each opening, extending at'their outer ends beyond the edges of the plate and at their inner endswithin the casing, a cam on the stud, having its cam surface on theunder side bearing on the inner ends of the catches, and a turninglocking plate on the stud under the cam and having a projection whichmay be moved under the inner end ofa catch to prevent depression thereofand a finger piece extending through a slot in said casing.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES W.- LYON.

Witnesses:

SIGNA FELrsKoG, H. G. BATOHELOR.

